Method for manufacturing polyurethane identification label and method for attaching polyurethane identification label

Abstract

The invention relates to a manufacturing method of a polyurethane identification label. The manufacturing method comprises the following steps: step 1, preparing a polyurethane image film printed with an identification; a step 2 of preparing a leaf film; a step 3 of forming an injection hole into which the polyurethane resin flows into the marking groove in the blade film; 4, preparing a mold composed of an upper plate, a middle plate and a lower plate, forming an identification groove and a position groove in the lower plate, forming a path groove in the upper surface of the middle plate combined with the lower plate and closing the identification groove and the position groove, forming an injection hole communicated with the injection hole in the path groove, combining the upper plate combined with the middle plate and closing the path groove and forming an injection port in the upper surface, inserting an image film into the bottom of the identification groove of the lower plate, inserting a blade film into the position groove, and mounting in a mold; and 5, injecting polyurethane resin into the mark groove, filling the polyurethane resin between the image film and the blade film, transferring the mark of the image film to the front of the polyurethane resin, and separating the polyurethane film and the bottom surface of the polyurethane resin after the polyurethane film and the bottom surface of the polyurethane resin are fused and integrated.

Description

Technical Field

[0001] The invention relates to a method for manufacturing a polyurethane identification label and a method for attaching a polyurethane identification label. The polyurethane identification label is attached to the outer surface of products such as clothing or bags to display the manufacturing company or product source and ensure product quality. Background Art

[0002] The identification label is attached to the outside of products such as clothing or bags by sewing or adhesive, and is printed and coated with the manufacturer's name or trademark name. It has the function of displaying the manufacturer's icon and product origin and ensuring product quality.

[0003] Furthermore, in order to have a decorative effect as well, various patterns are printed and coated, and attached in such a way that they are exposed on the outside of the product.

[0004] The more well-known a company is, the more likely it is to make its logo, emblem or other brand into a nameplate and attach it to its product in order to reflect its company image, and to publicize it widely through the media.

[0005] Metal logo badges are formed with a logo that displays the product's trademark, trade name, and manufacturer's company name in a unique font, and are attached to the casing of various products to display the brand of the company that produces the product.

[0006] This identification label with multiple functions is composed of an aluminum foil laminated on one side of a polycarbonate sheet, various decorative patterns printed on the surface of the aluminum foil by screen or offset printing, and epoxy as a coating to protect the decorative patterns.

[0007] Furthermore, the manufacture of such identification labels is made of a variety of materials and by a variety of methods, including injection molding, stamping, die casting, engraving, and the like.

[0008] In particular, metal labels have been widely used recently due to their beautiful colors and noble image, but they are made of metal materials, so the manufacturing processes such as cutting, grinding, and polishing are complicated. When installed on products, they are inconvenient to use because they are hard and heavy. There is a risk of being easily broken by external impact. When the metal breaks, sharp parts will appear, which may cause injuries to users.

[0009] In addition, due to its poor ductility, it is difficult to attach to the curved part of small products such as bags or shoes. Even if it is attached to the curved part of the product, it is inconsistent with the product due to the protruding part. Not only does it look ugly in design, but it is also easy to touch other things and fall off.

[0010] In order to solve the problem of metal identification labels, polyurethane (TPU) identification labels with many advantages are used. Polyurethane can achieve a variety of hardness changes, and has excellent tensile strength and tear strength, strong resistance to impact, friction, shear, and tearing, excellent flexibility and shape rebound recovery, excellent sound absorption and vibration absorption, a wide range of operating temperatures, excellent elasticity, high elongation, and especially, as a non-toxic and environmentally friendly material, it is also widely used as a material to replace PVC.

[0011] In addition, it has excellent adhesion to metals and various substances, excellent chemical resistance, ozone resistance, chemical resistance, oil resistance, excellent moldability, and excellent color expression.

[0012] Due to the advantages mentioned above, many polyurethane (TPU) identification labels are used to replace metal identification labels, but there are many technical problems that need to be solved. Compared with metal identification labels, polyurethane identification labels have better ductility and elasticity, and there are many methods to attach them to the fabric, such as bonding or sewing. However, if the identification part is made thick in order to make the logo have a three-dimensional effect, it still cannot be naturally attached to the fabric without a sense of heterogeneity. In other words, even if it is a polyurethane material with excellent ductility, if a thick identification label with a three-dimensional effect is attached, the boundary of the fabric will become wrinkled, or if it is attached to a curved part, the identification label will be uneven and deformed. In order to improve this problem, a thin film is formed in the shape of a leaf on the bottom surface of the relatively thick identification label, thereby improving the adhesion with the fabric and improving the properties of the joint to prevent wrinkles or uneven deformation of the boundary, but if the clothes are worn for a long time or washed many times, the joint part of the film and the identification label will often be detached.

[0013] This is because the adhesive component between the film and the identification label has low adhesion, and also because the adhesive, film and identification label are special-shaped materials with different thermal expansion rates and cannot withstand repeated temperature changes during the use of the clothes.

[0014] Therefore, the thinner the film bonded to the bottom surface of the identification label, the better its ductility. Therefore, when attached to the cloth, it actively deforms with the changes of the cloth, and there is no visual heterogeneity. The bonding force with the cloth will also be enhanced. However, the thinner the film, the more difficult it is to improve the bonding force (adhesion) between the film and the identification label.

[0015] Prior art literature

[0016] Patent Literature

[0017] Patent Document 0001: Korean Patent No. 10-1553772 (2015.09.10)

[0018] Patent document 0002: Korean Publication Patent No. 10-2004-104443 (December 10, 2004)

[0019] Patent document 0003: Korean Patent Publication No. 10-2014-63543 (2014.05.27)

[0020] Patent document 0004: Korean Patent Publication No. 10-2014-61332 (2014.05.21) Summary of the invention

[0021] Problems to be solved by the invention

[0022] The present invention is used to solve the problems mentioned above. It provides a method for manufacturing an identification label. During the manufacturing process of the three-dimensional identification label, a thin film is formed on the bottom surface of the identification label. The bonding strength between the identification label and the thin film can be improved by injection molding. It also provides a method for attaching the identification label. When the identification label is attached to the cloth, the foreign texture is reduced due to its property. Even if the attached cloth is washed many times and worn for a long time, the identification label will not fall off the cloth and the watertightness of the attached part will be maintained.

[0023] Solutions for solving problems

[0024] In order to achieve the above-mentioned purpose, the present invention provides a method for manufacturing a polyurethane identification label, characterized in that it comprises: a polyurethane image film preparation step 1, preparing a polyurethane image film with a logo printed thereon;

[0025] The blade film preparation step 2 is to prepare a blade film formed by laminating a polyurethane film and a PET film;

[0026] Injection hole forming step 3, forming an injection hole in the blade film for allowing the polyurethane resin to flow into the marking groove;

[0027] Film forming option step 4, preparing a mold consisting of an upper plate, a middle plate, and a lower plate, preparing a lower plate, forming a mark groove having the same shape as the mark and the same depth as the thickness of the mark, and a position groove having the same shape as the blade film and the same depth as the thickness of the blade film on the lower plate, preparing a middle plate, overlapping and combining the middle plate on the above-mentioned lower plate, and closing the above-mentioned mark groove and the position groove while forming a path groove for allowing polyurethane resin to flow on the upper surface, forming an injection hole connected to the injection hole of the above-mentioned blade film on the path groove, preparing an upper plate, overlapping and combining the upper plate on the above-mentioned middle plate, and closing the above-mentioned path groove while forming an injection port for allowing polyurethane resin to be injected on the upper surface, then inserting an image film into the bottom of the mark groove of the above-mentioned lower plate, inserting the blade film into the above-mentioned position groove, and installing it in the mold; and

[0028] Injection molding step 5, injecting polyurethane resin into the identification groove through the injection port of the upper plate of the above step 4, so that the polyurethane resin is filled between the above image film and the above blade film, so that the identification of the above image film is transferred to the front surface of the polyurethane resin and melted by the heat of the polyurethane resin, and the polyurethane film of the above blade film is partially melted by the heat of the polyurethane resin, melted with the bottom surface of the polyurethane resin and integrated and then separated.

[0029] In addition, a polyurethane identification label attachment method is provided, which is characterized by comprising: step 1, providing an identification label with a blade film welded on the bottom surface by injection molding;

[0030] Step 2, cutting the same shape as the logo shape in the above step 1 on the fabric to which the logo label is to be attached to form a logo shape perforated portion; and Step 3, after arranging the logo label in the above step 1 on the logo shape perforated portion of the fabric in the above step 2 in such a way that the blade film is located on the inner side of the fabric, a urethane primer layer and a hot melt layer are coated on the above transparent blade film, and then heat and pressure are applied to the fabric portion formed with the above logo shape perforated portion, so that the fabric and the blade film are melted into one.

[0031] In addition, a method for manufacturing a polyurethane identification label is provided, which is characterized in that it includes: a polyurethane image film preparation step 1, preparing a polyurethane image film printed with a logo; a film molding option step 4, preparing a mold consisting of an upper plate, a middle plate, and a lower plate, preparing a lower plate, forming a logo groove on the lower plate with the same shape as the logo and the same depth as the logo thickness, preparing a middle plate, the middle plate overlapping and combined with the above-mentioned lower plate, and closing the above-mentioned logo groove and position groove while forming a path groove on the upper surface that allows the polyurethane resin to flow, and forming a plurality of leg holes in the path groove, preparing an upper plate, and overlapping and combining the upper plate with the upper plate The middle plate is provided with an injection port for injecting polyurethane resin while closing the path groove. After that, the image film is inserted into the bottom of the identification groove of the lower plate and installed in the mold; and an injection molding step 5 is performed, in which the polyurethane resin is injected into the identification groove through the injection port of the upper plate of the step 4, so that the polyurethane resin fills the leg holes of the identification groove and the path groove, so that the identification of the image film is transferred to the front surface of the polyurethane resin through the heat of the polyurethane resin and melted, and while the polyurethane resin is solidified, the same number of legs and identification labels as the leg holes are formed into one body.

[0032] In addition, a method for attaching a polyurethane identification label is provided, which is characterized in that it includes: an identification label preparation step 1, in which a plurality of legs are integrally formed on the bottom surface by injection molding; a step 2, in which a plurality of leg holes having the same cross-sectional shape as the legs of the identification label of the above step 1 are formed on the cloth to which the identification label is to be attached, thereby forming a hole group; a step 3, in which each leg of the identification label of the above step 1 is inserted into each leg hole of the hole group of the cloth of the above step 2; and a step 4, in which a polyurethane film is separately provided to be combined with each leg end protruding toward the inner side of the hole of the above step 3, a carbamate base layer is coated, a carbamate hot-melt layer is coated on the above carbamate base layer, and then heat and pressure are applied thereto, thereby melting each leg and the above polyurethane film into one.

[0033] Effects of the Invention

[0034] According to the present invention, a blade film (formed by injection molding, with high bonding strength, and thin film) is bonded to the bottom surface of the polyurethane identification label. If attached to the cloth, it deforms flexibly according to the deformation of the cloth, thereby visually reducing the sense of heterogeneity. The blade film and the identification label are bonded by injection molding in a resin state, rather than by an adhesive, so the bonding strength is excellent. When the identification label is attached to the cloth, in fact, the blade film is attached by welding rather than sewing, so that the bonding strength with the cloth is increased, and the visual beauty is also excellent. In addition, the watertightness between the polyurethane blade film and the cloth is well maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 FIG. 1 is a diagram showing an injection molded identification label according to an embodiment of the present invention.

[0036] Figure 2 FIG. 1 is a diagram showing a blade film according to an embodiment of the present invention.

[0037] Figure 3 FIG. 4 is an exploded view of a mold according to an embodiment of the present invention.

[0038] Figure 4 It is a combined cross-sectional view of a mold according to an embodiment of the present invention.

[0039] Figure 5 A diagram showing the placement of an image film in the identification groove of the lower plate of a mold according to an embodiment of the present invention.

[0040] Figure 6 A diagram showing the placement of a blade film in a position groove of a lower plate of a mold according to an embodiment of the present invention.

[0041] Figure 7 The figure shows that an image film and a blade film are placed on the lower plate of a mold according to an embodiment of the present invention.

[0042] Figure 8 The figure shows a process of injecting polyurethane resin into a mold according to an embodiment of the present invention.

[0043] Fig. 9 The figure shows a solidified state of polyurethane resin after being injected into a mold according to an embodiment of the present invention.

[0044] Fig.10 FIG. 1 is a diagram showing a tag attached to cloth using an embodiment of the present invention.

[0045] Fig.11 FIG. 1 is a diagram showing an injection molded identification label according to another embodiment of the present invention.

[0046] Fig.12 This is a bottom perspective view of an injection-molded identification label according to another embodiment of the present invention.

[0047] Fig.13 This is an exploded view of a mold according to another embodiment of the present invention.

[0048] Fig.14 It is a combined cross-sectional view of a mold according to another embodiment of the present invention.

[0049] Fig.15 The figure shows the process of placing an image film in the identification groove of the lower plate of a mold according to another embodiment of the present invention.

[0050] Fig.16 A diagram showing a state where an image film is placed in a marking groove of a lower plate of a mold according to another embodiment of the present invention.

[0051] Fig.17 The present invention is a diagram showing a process of injecting polyurethane resin into a mold according to another embodiment of the present invention.

[0052] Fig.18 A diagram showing a mold according to another embodiment of the present invention in a solidified state after polyurethane resin is injected into the mold.

[0053] Fig.19 FIG. 1 is a diagram showing a tag attached to cloth using another embodiment of the present invention.

[0054] Description of reference numerals:

[0055] 110: Upper plate 112: Injection port

[0056] 120: Middle plate 122: Path groove

[0057] 130: Lower plate 132: Identification slot

[0058] 134: Position slot 136: Film fixing piece

[0059] 200: Identification label 202: Outrigger

[0060] 220: Blade film 220a: Polyurethane film

[0061] 220b: PET film 124: Leg holes

[0062] 300: Fabric 310: Logo-shaped perforated area

[0063] 320: hole 400: gasket membrane. DETAILED DESCRIPTION

[0064] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0065] The identification label of the present invention is realized by in-mold molding. In-mold molding (INMOLD, hereinafter referred to as IMD) has multiple advantages such as design flexibility and productivity compared to other decoration methods performed after molding. The above advantages include design flexibility, multiple colors, effects and textures through a single operation, long-term graphic manufacturing productivity, and system cost savings.

[0066] Design flexibility allows products to be easily manufactured into completely different shapes, and customers can express their individuality.

[0067] When the product comes out of the mold through IMD, it can perfectly achieve different colors, effects and textures. When one of these factors changes, there is no need to readjust or change the color of the resin. Simply changing the film can significantly change the appearance or texture.

[0068] When IMD is used, the "long-lasting" pattern is protected between the film and the resin. Unlike conventional surface patterns that can be peeled off, the back IMD pattern cannot be removed without damaging the component.

[0069] Additionally, using IMD reduces secondary operations and labor, eliminates adhesives, and reduces system costs in many applications.

[0070] The IMD process is described below.

[0071] 1. Screen printing steps

[0072] This is the step where the logo is formed on the film facestock, by transferring the design onto the film using screen printing. It is important to follow all manufacturers' recommendations.

[0073] 2. Film forming option steps

[0074] This step is the step of installing the film in the mold. To obtain a good quality molded part, it is very important to properly fill the mold insert in the injection molding tool. There are many options for film molding.

[0075] 3. Injection molding steps

[0076] This step is to inject liquid into the mold so that the logo printed on the film installed in the mold is transferred to the injection molding part and integrated. The molding of in-mold molding is not much different from the existing molding. However, in order to obtain high-quality parts and proper molding and trimming, the design of the tool is very important.

[0077] However, the following problems may occur when implementing IMD.

[0078] As with other injection molding methods, multiple problems occur: ink cleaning shuts off; delamination of molded products; textures and wrinkles such as orange peel appear on the lens; stress lines are observed when observed with a polarizing filter; poor graphics; poor graphic registration; blurred or white graphics; resin wrapping in the wrong direction; material is not dry; the molded film surface has defects such as orange peel; there are vacuum spaces the size of bubbles or pins; the film sags too much; it is not fully molded; poor details; sag variations between film blanks; spider webs or wrinkles are generated during the molding process; the film tears when the film is fixed and molded in the mold, etc.

[0079] The method to solve this problem varies depending on the situation, but there are many cases where specific problems arise due to the material characteristics of the film.

[0080] The materials used in manufacturing IMD labels include PC, PET, ABS, silicone, urethane, etc.

[0081] Polyurethane has the advantages of impact, friction, cutting and tearing, excellent formability, chemical resistance, ozone resistance, chemical resistance, oil resistance, and high elongation.

[0082] As mentioned above, each material used as a film has relative advantages and disadvantages, but the manufactured identification label must have high hardness and good ductility. If the ductility is low, when attached to clothing with almost no structural rigidity, the clothing and the identification label will not be coordinated, and if attached to curved parts such as shoes and bags, it will easily fall off during use. Therefore, as a material for identification labels, ductility is very important.

[0083] The biggest advantage of identification labels made of polyurethane film is its good ductility. Therefore, even if attached to the curved part of clothing, shoes or bags, it looks like metal and does not produce a foreign texture.

[0084] However, as the thickness increases, even a polyurethane label with good ductility will have a lower ductility when attached to the fabric, resulting in a different texture. Therefore, the blade film is melted on the bottom surface of the polyurethane label through the injection mold. The blade film is melted by the injection mold in terms of separation due to bonding strength and temperature changes. In addition, the image film is transferred to the surface of the polyurethane label exposed to the outside through the injection mold.

[0085] As an embodiment of the present invention, the process of transferring the image film to the polyurethane identification label by IMD and fusing the blade film is as follows. Figures 1 to 9 As shown, a mold is prepared which is divided into an upper plate 110, a middle plate 120, and a lower plate 130, and is provided with an image film 210 and a blade film 220. The image film 210 is made of polyurethane material, and when the logo label 200 is injection molded, the image film 210 is transferred to the front surface of the logo label 200 to make the logo clearly visible, and the blade film 220 is integrated with the logo label 200 and extends along the periphery of the logo label 200, such as a blade.

[0086] A plurality of target mark grooves 132 are formed at regular intervals on the lower plate 130. The number of the mark grooves 132 can be increased or decreased according to the size of the mold or the size of the mark. The mark grooves 132 are positions for filling polyurethane resin. Position grooves 134 are formed on the surface of the lower plate 130 at the portion where the mark grooves 132 are formed. Film fixing members 136 for fixing the blade film 220 during injection molding are formed in the position grooves.

[0087] The width of the position groove 134 is 2 to 5 mm wider than the edge of the identification groove 132, and is formed at the same depth as the thickness of the blade film (polyurethane film + PET film). The blade film 220 is formed by bonding and laminating the PET film 220b to the polyurethane film 220a, and is in a laminated state until the step before the identification label 210 is attached to the cloth 300, and the polyurethane film 220a is prevented from being deformed.

[0088] If the width of the position groove 134 is formed to be 2 to 5 mm wider than the edge of the mark groove 132, a blade (a blade film along the outer periphery of the mark, such as the portion where the blade extends) 2 to 5 mm wider than the edge of the mark is formed at the end of injection molding. The blade is very important in improving the bonding strength, reducing the foreign texture, and maintaining watertightness when attaching the mark label 210 to the cloth.

[0089] On one side of the blade film 220 are formed: two film fixing holes p, which are inserted into the film fixing member 136 of the position groove 134; and two injection holes h, which are connected to the identification groove 132. The reason for forming two injection holes h on the blade film 220 is as follows: Figure 2As shown, the marking groove 132 is separated into two discontinuous parts, so when the polyurethane resin is injected, it is injected into each marking groove respectively. If the marking groove 132 is separated into three discontinuous parts, three injection holes h should be formed in the marking groove 132.

[0090] The middle plate 120 is assembled on the lower plate 130. The middle plate 120 is assembled on the lower plate 130 in an overlapping manner to cover and close the identification groove 132 and the position groove 134. A path groove 122 is formed on the upper surface of the middle plate 120 so that the polyurethane resin flows and is injected into the identification groove 132 and the position groove 134 during injection molding. Injection holes h corresponding to the injection holes h formed in the blade film 220 are formed in the path groove 122. That is, if the polyurethane resin flows into the injection hole h of the middle plate 120, it is formed in a manner that it flows directly into the injection hole h of the blade film 220.

[0091] The upper plate 110 is assembled on the middle plate 120. The upper plate 110 is assembled on the middle plate 120 to close the path groove 122, and an injection port 112 is formed at the center of the upper plate 110. The injection port 112 is a position for injecting polyurethane resin.

[0092] Next, the method for producing the polyurethane tag label of the present invention configured as described above will be described.

[0093] First, the image film 210 is placed in the identification groove 132 of the lower plate 130, and the blade film 220 is placed in the position groove 134 so that the polyurethane film 220a faces downward, and then the middle plate 120 and the upper plate 110 are combined, and a polyurethane resin at 200 to 280° C. is injected through the injection port 112. When the polyurethane resin is injected, the polyurethane resin flows into the path groove 122 and flows through the injection hole h formed in the path groove 122, and through the injection hole h formed in the blade film 220, and the identification groove 132 is filled with the polyurethane resin.

[0094] The logo formed on the image film 210 is transferred and integrated by the polyurethane resin filled in the logo groove 132, and a portion of the surface of the polyurethane film 220a of the blade film 220 is partially melted by the initial heat of the polyurethane resin, and after the polyurethane resin is gradually cooled and solidified in the mold, the polyurethane resin and the blade film 220 are integrated. The polyurethane resin solidified in the logo groove 132 becomes the logo label 200, so when the mold is separated and the logo label 200 is taken out of the logo groove 132, the front surface of the logo label 200 is in a state where the image film 210 is transferred, and the bottom surface of the logo label 200 is in a state where it is integrated with the blade film 220.

[0095] The blade film 220 is in a state where the polyurethane film 220a and the PET film 220b are bonded together. Although the ductility is excellent, due to the characteristics of the polyurethane film 220a that is easily deformed by heat or external force, in order to prevent the deformation of the polyurethane film 220a, it is very important to fuse it with the polyurethane resin when injection molding is performed in a state where the PET film is bonded together.

[0096] In addition, for the bonding strength between the identification label 200 and the blade film 220, it is very important that the blade film 220 is bonded to the identification label 200 by injection molding in a high-temperature polyurethane resin state. If the polyurethane resin is injected into the mold, it starts to cool from this point, and the initial heat is the highest temperature. Therefore, in the early stage, the polyurethane film 220a of the blade film 220 is partially melted by the polyurethane resin, and the polyurethane resin is cooled and solidified, so that the identification label 200 and the blade film are welded and bonded.

[0097] However, when the identification label 200 and the blade film 220 are combined, if the injection molding is not performed in the resin state and the adhesive is used for combination, the adhesive and the polyurethane film 220a of the identification label 200 made of polyurethane and the blade film 220 made of polyurethane are special-shaped materials, so the temperature changes repeatedly during use, which makes it easy to separate. In addition, even if the identification label 200 and the blade film 220 are injection molded in the mold, the mold is heated when the identification label 200 is in a solid state other than the resin state, and the identification label 200 is partially melted by the heat, and the blade film 220 is partially melted, and the mold is cooled again after the identification label 200 and the blade film 220 are combined, the above method not only has a difference in bonding strength, but also the bonding surface of the identification label 200 and the blade film 220 cannot be melted by the target amount, and the bonding strength is also reduced.

[0098] Hereinafter, a method of attaching the polyurethane identification label manufactured according to one embodiment of the present invention as described above to a cloth will be described.

[0099] like Fig.10 As shown, a logo label 200 is provided on the bottom surface and is made by being melted into one piece with the blade film 220 .

[0100] The cloth 300 to which the logo label 200 is to be attached is cut into the same shape as the logo shape described above to form the logo shape perforated portion 310 .

[0101] After placing the logo label 200 in step 1 so that the blade film 220 is located inside the fabric 300 having the logo-shaped perforated portion 310, a urethane base layer and a hot melt layer are applied to the blade film 220, and then heat is applied to the fabric 300 having the logo-shaped perforated portion 310 and the blade film 220 while applying pressure, so that the fabric 300 and the blade film 220 are bonded together through the urethane base layer and the hot melt layer. At this time, before applying heat for welding, the PET film 200b attached to the polyurethane film 200a of the blade film 220 is removed.

[0102] As described above, although the identification label 200 is attached to the fabric 300, it is the blade film 220 that is actually attached to the fabric 300. For example, the fabric 300 of mountaineering clothing has elasticity, and many of them are coated on the surface. Even if the identification label 200 is made of polyurethane material with excellent ductility, if the thick identification label 200 is directly attached, it cannot be linked with the expansion and contraction of the fabric 300, so the joint part wrinkles or the bonding force is reduced, so that it is separated during use, and moisture penetrates into the joint part. However, as in the present invention, if the thin film blade film 220 made of polyurethane material is attached, it is both a polyurethane material and a thin film, so it has excellent elasticity, and it is linked with the deformation caused by the expansion and contraction of the fabric 300, so that the joint part will not wrinkle, the visual heterogeneity is less, and it remains watertight, and moisture will not penetrate into the joint part.

[0103] Hereinafter, another embodiment of the present invention will be described.

[0104] Another embodiment of the present invention differs from the first embodiment in that there is no blade film, and when attached to the cloth, a washer film (washer film) made of polyurethane material is used. The identification label 200 of the first embodiment is formed by connecting lines like text, and also has a large area and no lines. If the lines are connected, only the line part will protrude, so when attached to the cloth, only the line part needs to be perforated. However, if there are no lines, the cloth needs to be perforated with the same size as the entire identification label. The larger the perforated part (area), the more damaged parts of the cloth will be, thereby changing the basic structure of the cloth, reducing elasticity, and reducing the bonding strength with the cloth. Therefore, a method is developed to minimize the loss of the cloth and improve the bonding strength with the cloth when attaching an identification label with a relatively wide area.

[0105] As another embodiment of the present invention, the process of transferring the image film to the polyurethane identification label by IMD and forming the leg portion is as follows. Figures 11 to 18 As shown, a mold is prepared which is divided into an upper plate 110, a middle plate 120, and a lower plate 130.

[0106] A plurality of target mark-shaped marking grooves 132 are formed at regular intervals on the lower plate 130. The number of the marking grooves 132 can be increased or decreased according to the size of the mold or the size of the mark. The marking grooves 132 are positions for filling polyurethane resin.

[0107] The middle plate 120 is assembled on the lower plate 130 . The middle plate 120 is assembled on the lower plate 130 and covers and closes the marking groove 132 . A path groove 122 is formed on the upper surface of the middle plate 120 so that the polyurethane resin flows and is injected into the marking groove 132 .

[0108] A plurality of leg holes 124 are formed on the bottom surface of the middle plate 120 in communication with the identification groove 132. The leg holes 124 are filled with polyurethane resin in the identification groove 132 and solidified together to form the legs 202 of the identification label 200. The depth of the leg holes 124 becomes the leg length of the identification label 200, and therefore, the depth of the leg holes 124 (the thickness of the middle plate) is determined in consideration of the thickness of the fabric.

[0109] The upper plate 110 is assembled on the middle plate 120 . The upper plate 110 is assembled to the middle plate 120 to close the path groove 122 . An injection port 112 communicating with the path groove 122 is formed at the center of the upper plate 110 .

[0110] The method of attaching the polyurethane identification label according to another embodiment described above to cloth is as follows.

[0111] like Fig.19 As shown, a marking label 200 is provided, on the bottom surface of which, legs 202 are fused together by injection molding.

[0112] The fabric 300 to which the tag label 200 is to be attached has holes 320 that have the same cross-sectional shape as the legs 202 of the tag label 200 and are the same in number as the legs 202 .

[0113] The legs 202 of the tag 200 are inserted into the holes 320 on the outside of the fabric 300, and the legs 202 are protruded toward the inside of the fabric 300. A gasket film 400 made of polyurethane is welded to the ends of the protruding legs 202. After the gasket film 400 is coated with a polyurethane base layer and a polyurethane hot-melt layer, the gasket film 400 is placed at the ends of the legs and heat and pressure are applied, so that the legs 202 and the gasket film 400 are melted into one. That is, the tag 200 is combined with the fabric 300 by the gasket film 400 welded to the legs 202.

[0114] At this time, the end of the leg 202 is partially melted and flattened, thereby being welded to the gasket film 400. If the end of the leg 202 is flattened, the length of the leg 202 becomes shorter, and the distance between the bottom surface of the tag label 200 and the gasket film 400 becomes narrower, so that the fabric 300 therebetween is closely attached and the play disappears. In addition, if the leg 202 is flattened, the flattened portion is caught by the hole 320 of the fabric 300, thereby also serving to improve the bonding force.

Claims

1. A method for manufacturing a polyurethane identification label, characterized in that: include: Preparation of polyurethane image film Step 1, preparing a polyurethane image film printed with a logo; The blade film preparation step 2 is to prepare a blade film formed by laminating a polyurethane film and a PET film; Injection hole forming step 3, forming an injection hole in the blade film for allowing the polyurethane resin to flow into the marking groove; Film forming option step 4, prepare a mold consisting of an upper plate, a middle plate, and a lower plate, prepare a lower plate, form a mark groove with the same shape as the mark and the same depth as the thickness of the mark, and form a position groove with the same shape as the blade film and the same depth as the thickness of the blade film on the lower plate, prepare a middle plate, overlap and combine with the lower plate, close the mark groove and the position groove, and form a path groove for the flow of polyurethane resin on the upper surface, and form an injection hole connected to the injection hole of the blade film on the path groove, prepare an upper plate, overlap and combine with the middle plate, close the path groove, and form an injection port for the injection of polyurethane resin on the upper surface, then insert the image film at the bottom of the mark groove of the lower plate, insert the blade film into the position groove, and install it in the mold; as well as Injection molding step 5, injecting polyurethane resin into the identification groove through the injection port of the upper plate of step 4, so that the polyurethane resin is filled between the image film and the blade film, so that the identification of the image film is transferred to the front surface of the polyurethane resin and melted by the heat of the polyurethane resin, and the polyurethane film of the blade film is partially melted by the heat of the polyurethane resin, melted with the bottom surface of the polyurethane resin, integrated and separated.

2. A method for manufacturing a polyurethane identification label, characterized in that: include: Preparation of polyurethane image film Step 1, preparing a polyurethane image film printed with a logo; Film forming option step 4, prepare a mold consisting of an upper plate, a middle plate, and a lower plate, prepare a lower plate, form a logo groove in the same shape as the logo and with the same depth as the logo thickness on the lower plate, prepare a middle plate, overlap and combine the middle plate on the lower plate, close the logo groove and the position groove, form a path groove on the upper surface for the polyurethane resin to flow, form a plurality of leg holes on the path groove, prepare an upper plate, overlap and combine the upper plate on the middle plate, close the path groove, form an injection port on the upper surface for the polyurethane resin to be injected, insert the image film at the bottom of the logo groove of the lower plate, and install it on the mold; as well as Injection molding step 5, injecting polyurethane resin into the identification groove through the injection port of the upper plate of step 4, so that the polyurethane resin fills the leg holes of the identification groove and the path groove, so that the logo of the image film is transferred to the front surface of the polyurethane resin through the heat of the polyurethane resin and melted, and while the polyurethane resin is solidified, a plurality of legs and identification labels of the same number as the leg holes are formed into one body.

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